Home extensions in Bangor, County Down
Every type of house extension in Bangor, County Down, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsBT19, BT20
- Price regionNorthern Ireland (×0.86)
- Planning rulesNorthern Ireland
- Site visitFree, no obligation
Bangor, County Down extension prices at a glance
Use these Bangor, County Down guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Wraparound extensions | 25 m² | £49,000 – £62,500 |
| Double-storey extensions | 32 m² | £49,500 – £65,000 |
| Kitchen extensions | 20 m² | £36,000 – £46,000 |
| Orangery extensions | 16 m² | £38,500 – £48,500 |
| Extensions over a garage | 12 m² | £21,500 – £28,000 |
| Side return extensions | 11 m² | £22,500 – £28,500 |
| Single-storey rear extensions | 20 m² | £35,000 – £45,000 |
Areas we cover around Bangor, County Down
Site visits are available across Bangor, County Down (BT19, BT20). Neighbouring towns we cover include Newtownards (5 miles), Downpatrick (23 miles), Banbridge (33 miles), Newry (43 miles). Carrickfergus, in County Antrim, is roughly 7 miles from Bangor, County Down and also on our list.
Planning and building control in Bangor, County Down
In Northern Ireland the Planning (General Permitted Development) Order 2015 lets some single-storey rear extensions go ahead without planning permission, up to 3 m on a semi-detached or terraced house and 4 m on a detached house, within height and boundary limits. Larger, side and two-storey extensions normally need planning permission from the council, and building control approval is separate.
In a conservation area or area of townscape character the permitted development rights are more limited, listed homes need listed building consent, and if rights have been removed by a condition, any extension needs an application.
In Northern Ireland building control is run by the councils under the Building Regulations (Northern Ireland). We submit full plans or a building notice and book the inspections through to completion.
Applications are decided by your council, which handles local planning in Northern Ireland.
Choosing the right extension in Bangor, County Down
Northern Ireland's housing ranges from city terraces to large numbers of detached houses and bungalows on rural plots, many in render, where single-storey extensions fit easily.
For many houses here, bungalow extensions, single-storey rear extensions or side extensions gives the most useful space for the budget.
All extension types we build in Bangor, County Down
- Single-storey rear extensions · from £18,000
- Building regulations for extensions · from £750
- Side return extensions · from £15,000
- Bungalow extensions · from £22,500
- Planning permission for extensions · from £300
- Timber frame extensions · from £18,000
- Extensions over a garage · from £20,500
- Utility and boot room extensions · from £12,000
- Pitched roof extensions · from £19,000
- Annexe extensions · from £47,000
- Home office extensions · from £13,500
- Orangery extensions · from £25,500
- Porch extensions · from £3,400
- Side extensions · from £18,500
- Kitchen extensions · from £23,000
- Wraparound extensions · from £30,500
- Double-storey extensions · from £32,500
- Glass box extensions · from £25,500
- Flat roof extensions · from £18,000
- Extension plans and drawings · from £1,000
- Conservatory replacement extensions · from £17,000
- Bedroom extensions · from £22,000
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Bangor, County Down
How much does an extension cost in Bangor, County Down?
Using our Northern Ireland factor (×0.86), a standard-spec single-storey extension of 20 m² is a guide £35,000 to £45,000 including VAT, and a 32 m² two-storey extension £49,500 to £65,000. Your written price follows the survey.
Will my neighbours need to be told?
If you apply for planning permission the council notifies neighbours, and we agree access with them in writing for work near a shared boundary.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Do you cover all of Bangor, County Down?
Yes, across the whole of Bangor, County Down. Site visits are free and there is no obligation.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Bangor, County Down
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.